ATE421190T1 - MULTI-CHANNEL PULSE MODULATOR SYSTEM - Google Patents

MULTI-CHANNEL PULSE MODULATOR SYSTEM

Info

Publication number
ATE421190T1
ATE421190T1 AT05744247T AT05744247T ATE421190T1 AT E421190 T1 ATE421190 T1 AT E421190T1 AT 05744247 T AT05744247 T AT 05744247T AT 05744247 T AT05744247 T AT 05744247T AT E421190 T1 ATE421190 T1 AT E421190T1
Authority
AT
Austria
Prior art keywords
modulator
modulator system
pulse width
pulse modulator
channel pulse
Prior art date
Application number
AT05744247T
Other languages
German (de)
Inventor
Kim Pedersen
Lars Arknfs-Pedersen
Original Assignee
Tc Group As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tc Group As filed Critical Tc Group As
Application granted granted Critical
Publication of ATE421190T1 publication Critical patent/ATE421190T1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4902—Pulse width modulation; Pulse position modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/114—Indexing scheme relating to amplifiers the amplifier comprising means for electro-magnetic interference [EMI] protection
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/351—Pulse width modulation being used in an amplifying circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
  • Amplitude Modulation (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

The invention relates to pulse width modulator system (PWMS) comprising a modulator system input (MI),a modulator output (MO), an amplitude distribution filter (ADF) ,and a pulse width modulator (PMOD), wherein said amplitude distribution filter (ADF) establishes an intermediate output signal (OS) by modifying the level of the amplitude distribution of an input signal (IS) within at least one predetermined amplitude range of said input signal (IS), said input signal (IS) being received from said modulator system input (MI), and wherein said pulse width modulator (PMOD) provides a modulator output signal (MOS) on said modulator output(MO) on the basis of said intermediate output signal (OS).
AT05744247T 2004-05-28 2005-05-30 MULTI-CHANNEL PULSE MODULATOR SYSTEM ATE421190T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK2004/000376 WO2005117253A1 (en) 2004-05-28 2004-05-28 Pulse width modulator system

Publications (1)

Publication Number Publication Date
ATE421190T1 true ATE421190T1 (en) 2009-01-15

Family

ID=34957542

Family Applications (2)

Application Number Title Priority Date Filing Date
AT04735195T ATE387750T1 (en) 2004-05-28 2004-05-28 PULSE WIDTH MODULATOR SYSTEM
AT05744247T ATE421190T1 (en) 2004-05-28 2005-05-30 MULTI-CHANNEL PULSE MODULATOR SYSTEM

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT04735195T ATE387750T1 (en) 2004-05-28 2004-05-28 PULSE WIDTH MODULATOR SYSTEM

Country Status (5)

Country Link
US (2) US7728689B2 (en)
EP (2) EP1751855B1 (en)
AT (2) ATE387750T1 (en)
DE (2) DE602004012165T2 (en)
WO (2) WO2005117253A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7728689B2 (en) * 2004-05-28 2010-06-01 The Tc Group A/S Pulse width modulator system
GB2449591B (en) * 2005-01-17 2009-03-18 Wolfson Microelectronics Plc Pulse width modulator quantisation circuit
US7613920B2 (en) 2005-08-22 2009-11-03 Alcatel Lucent Mechanism to avoid expensive double-encryption in mobile networks
US7720170B2 (en) * 2005-12-13 2010-05-18 Awq Consulting Inc. Low emission signal generator and distributor system
GB2499699A (en) 2011-12-14 2013-08-28 Wolfson Ltd Digital data transmission involving the position of and duration of data pulses within transfer periods
CA2882321C (en) 2011-12-14 2018-05-01 Wolfson Microelectronics Plc Data transfer
GB2497566A (en) * 2011-12-14 2013-06-19 Wolfson Microelectronics Plc Simultaneous transmission of a plurality of audio data streams via a single communication link
DE102022104868B4 (en) 2022-03-02 2024-05-02 Webasto SE Arrangement for operating an electrical component in a vehicle

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JPS5582596A (en) * 1978-12-18 1980-06-21 Sony Corp Head phone unit
US4240036A (en) * 1979-04-13 1980-12-16 General Electric Company Linearized three-state switching amplifier
US4345323A (en) * 1980-01-07 1982-08-17 Amp Incorporated Pulse duration digital multiplexing system
DE3264600D1 (en) * 1981-02-16 1985-08-14 Bbc Brown Boveri & Cie Method of amplifying an analog low-frequency signal using a switching amplifier and switching amplifier for carrying out said method
LU84520A1 (en) 1982-12-10 1984-10-22 Wurth Paul Sa COOLING DEVICE FOR A LOADING INSTALLATION OF A TANK OVEN
US4703471A (en) * 1985-01-02 1987-10-27 General Electric Company Monolithically integrated electro-optical multiplexer/demultiplexer
JPS61171244A (en) * 1985-01-25 1986-08-01 Nippon Signal Co Ltd:The Method for synthesizing pulse width modulation wave
GB9103777D0 (en) * 1991-02-22 1991-04-10 B & W Loudspeakers Analogue and digital convertors
LU87948A1 (en) * 1991-06-12 1993-01-15 Wurth Paul Sa DEVICE FOR COOLING A DISTRIBUTION CHUTE OF A LOADING INSTALLATION OF A TANK OVEN
US5617058A (en) * 1995-11-13 1997-04-01 Apogee Technology, Inc. Digital signal processing for linearization of small input signals to a tri-state power switch
US5956674A (en) * 1995-12-01 1999-09-21 Digital Theater Systems, Inc. Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels
US6028944A (en) * 1997-03-04 2000-02-22 Compaq Computer Corporation Signal processing apparatus with selective power amplification
DE19857524C2 (en) * 1998-12-14 2001-09-06 Siemens Ag Power amplifier
US6107876A (en) * 1999-04-13 2000-08-22 Ravisent Technologies, Inc. Digital input switching audio power amplifier
DE69926728T2 (en) * 1999-04-27 2006-05-18 Stmicroelectronics S.R.L., Agrate Brianza Limiter for the analog input signal swing in a Class D amplifier with a constant duty cycle
US6665338B1 (en) * 2000-01-05 2003-12-16 Motorola, Inc. Circuitry for converting a sampled digital signal to a naturally sampled digital signal and method therefor
US6538504B1 (en) * 2000-05-19 2003-03-25 Jam Technologies, Llc Switching amplifier crossover distortion reduction technique
US6429737B1 (en) * 2000-07-06 2002-08-06 Stmicroelectronics, Inc. Method and apparatus for multi-channel digital amplification
EP1178388B1 (en) 2000-08-04 2006-06-28 STMicroelectronics S.r.l. PCM/PWM converter with PWM power amplifier
US6977546B2 (en) * 2000-10-30 2005-12-20 Simon Fraser University High efficiency power amplifier systems and methods
US6593807B2 (en) * 2000-12-21 2003-07-15 William Harris Groves, Jr. Digital amplifier with improved performance
US6552607B1 (en) * 2001-11-12 2003-04-22 Apogee Technology Inc. Time division multiplexed PWM amplifier
US6606044B2 (en) * 2002-01-02 2003-08-12 Motorola, Inc. Method and apparatus for generating a pulse width modulated signal
US20040189502A1 (en) * 2003-03-04 2004-09-30 Lee Ying Lau Multi-level pulse width modulation in digital system
US20040223545A1 (en) * 2003-03-04 2004-11-11 Lee Ying Lau Multi-level pulse width modulation in digital system
WO2004105242A2 (en) 2003-05-20 2004-12-02 Tc Electronics A/S Method of estimating an intersection between at least two continuous signal representations
DE60316612T2 (en) 2003-07-07 2008-07-17 Tc Electronic A/S METHOD FOR PRODUCING A PWM-MODULATED OUTPUT SIGNAL REPRESENTATION
DE10337782B4 (en) * 2003-07-14 2007-03-01 Micronas Gmbh Method and circuit for effective conversion of PCM to PWM data
US6970051B2 (en) * 2003-12-08 2005-11-29 Harris Corporation Pulse width modulator circuit having negative bias
US7728689B2 (en) * 2004-05-28 2010-06-01 The Tc Group A/S Pulse width modulator system

Also Published As

Publication number Publication date
US7728689B2 (en) 2010-06-01
EP1751855B1 (en) 2008-02-27
WO2005117382A3 (en) 2006-03-16
WO2005117382A2 (en) 2005-12-08
EP1751856B1 (en) 2009-01-14
EP1751856A2 (en) 2007-02-14
WO2005117253A1 (en) 2005-12-08
EP1751855A1 (en) 2007-02-14
US20080211594A1 (en) 2008-09-04
DE602005012384D1 (en) 2009-03-05
ATE387750T1 (en) 2008-03-15
US20080278253A1 (en) 2008-11-13
DE602004012165T2 (en) 2009-06-18
DE602004012165D1 (en) 2008-04-10

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Legal Events

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